作业帮had been done与had done是什么结构 他们的用法是什么
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had been done与had done是什么结构 他们的用法是什么
had been done与had done是什么结构 他们的用法是什么
had been done与had done是什么结构 他们的用法是什么
had been done 是过去完成被动时态
had done 是过去完成时态,表示过去某时间前已经发生的动作或情况,这个过去的时间可以用by,before等介词短语或一个时间状语从句来表示；或者表示一个动作在另一个过去动作之前已经完成.
we had just had our breakfast when peter came in
i had done sth=sth had been done by me
一般这两个时态有固定的时间状语做搭配的
关键还是要看上下文进行选择的
had been done 被完成了，被动语态,用于句子中有重大或重要的成分
had done 完成了...一般过去时，一些一般的句子，没有特殊意义
The most important task had been done by Joe.
he had done him homework
what had been done had been done.
had been done 怎么用?
had been done与had done是什么结构 他们的用法是什么
had been done和 had done有什么区别呢?
英语had done 和had been done区别
has been done 与had been done要怎么用啊
had been doing 和had been done有什么差别
had been doing 和had been done有什么差别?
has been done,had been done 的区别是什么?
had been done 用于什么时态?
had been doing 和 had done的区别
The man in prison insisted that he ___ nothing wrong and ___set free.A.had done,should be B.should do,should beC.had done,had been D.should do,had been
had he been here yesterday,he would attend.为什么是had了,后面是would do而不是would have done
英语时态区分have done .have been doing.had done.had been doing.有什么区别.
虚拟语气中的would/conld/should do/have done 与 did/had done有何区别
The work____(do),we felt relieved.答案是done ,我想问填had been done 可以不?
have done.have been done .had done.had been done 有什么区别?怎么用?有什么结构?
They had good discipline and did only what had___.A.to do B.to be done C. done D.been done求解释